Automatic-balance high-pressure pump.



P. M. BUDLONG.

AUTOMATIC BALANCE HIGH PRESSURE PUMP.

APPLIUATION FILED 111111.20. 1911.

1,004,982. Patented oct. s, 1911.

CULUMBIA PLANDGRAPM CO.,WAsmNGToNY D. c.

UNITED STATES PATENT OFFICE.

FRANK IVI. BUDLONG, OF SAN JOSE, CALIFORNIA, ASSIGNOR 0F THREE-FOURTHST0 WILBUR F. BUDLONG, OF BEREA, OHIO.

AUTOMATIC-BALANCE HIGH-PRESSURE PUMP.

Specicaton of Letters Patent.

Application filed March 20, 1911.

To all whom it may concern:

Be it known that I, FRANK M. BUDLONG, a citizen of the United States,residing at San Jose, in the county of Santa Clara and State ofCalifornia, have invented certain new and useful Improvements inAutomatic-Balance High-Pressure Pumps, of which the following is aspecication.

This invention has reference to an automatic balanced high pressure pumpand storage tank adapted, among other uses, to be advantageouslyemployed for spraying trees, all substantially as shown and describedand particularly pointed out in the claims.

In the single figure of illustration of the invention forming apart ofthis specification, there is shown a vertical sectional elevation of thecomplete device or apparatus and which comprises a liquid storage orpressure tank T having an outlet 2 at its bottom with which a pipe orhose can be connected for any purpose according to the use that is madeof the device for the time being. Along with this tank I provide meansfor forcing liquid into the same against accumulating atmosphericpressure therein, and have so constructed the parts that the saidpressure can be utilized to assist in the hand operation of the liquidpump and balance the pressure. Thus, C represents a pump or pumpcylinder and P a piston or plunger therein having to do with forcing theliquid into tank T. The said cylinder is shown as supported upon a baseB of cast metal, in this instance, and having liquid channels thereinwith an intake through pipe E and running first to the base of the pumpand thence past the two check valves V and V to the tank T. Said valvesare located in especially constructed cages or cribs indicated by 3 andI respectively and located one directly over the other and in thisinstance constituted of separate parts set into the main casing or baseB. Each cage has its ball valve, above noted, adapted to seat by gravityand to open successively under the action of the pump. Entrance of theliquid as it passes valve V is by short pipe or coupling 5.

M. represents a motor cylinder located in line with pump cylinder Cabove and apart therefrom and supported from base B en rods or uprights6. A piston N in cylinder M is connected with piston or plunger P by arod or bar It, and said parts together are adapted to be reciprocated bymeans of hand operating lever L. This lever is pivoted on base B at 7and has a crank arm 8 extending inward to a point substantially in linewith piston rod R with which it is connected by link or links 9 and atrunnion or trunnions 10 about midway lengthwise on said rod and at apoint above cylinder C relatively about as shown. The lever L has aswinging back and forth movement on its pivot 7 yand both the pump andthe motor are operated simultaneously thereby. The first `essential ofthis operation of course is the iforcing of the indrawn liquid into tankor receptacle T past the check valves V and V', `and incident to thisand as an auxiliary `agency or force we have the action of the`compressed air upon the pneumatic motor. `The said motor is connectedwith the top or dome of tank T by means of a pipe line G, in which aretwo shut-0E valves g and g', the valve g controlling the flow in pipe Grbetween the pump and the tank, and valve g serving as a how-off or openvent valve as operations may require. For example, if for any reason,the valve g should be closed the valve g could be opened and the saidmotor would run idle while the liquid pump is at work. Otherwise, withvalve g closed and valve g open in operation any accumulated pressure ofair in the top of the tank by reason of filling in of liquid frombeneath would react on piston N and thus assist in depressing theplunger P and in a measure balance or equalize the downward action withthe upward action of said plunger. Thus a more or less uniformresistance is established which the operator has to deal with throughlever L and certain compensations of pressure are obtained especiallywhen otherwise the down stroke of the liquid pump would be hardest.Obviously the ultimate object of all the above mechanism is to createand maintain a sustained atmospheric pressure in tank T with a quantityof liquid therein so as to force a uniform stream of liquid from thebottom of the tank to the spraying device, not shown, but which may haveconnection with opening 2. The pressure of air on the pis ton N fromexpansion of the whole volume of compressed air in tank or chamber T isavailable to assist the operator in discharging the liquid from the pumpat a higher pressure than would be possible without such assistance.

In the operation of a pump of the type shown the operator stands erectfacing the pump. The greater force could be applied to the handle by theforward movement of the handle causing downward or pressure movement 'ofthe liquid piston. The ratioI of the area of the pistons would thereforevary from any fixed constant according to the height, weight or strengthof the operator. By actual practice it is found that this variation asto the application of the operating power is slight, and that theaverage person can, with convenience, apply twice the power on a forwardor downward movement as compared with a reverse movement Iby reason ofthe added weight of the trunk of the operator together with the naturaltraining of the muscles of the body and limbs to forward movements.Therefore I establish the ratio of the cylinders, theoretically, to theratio of the ease of the average operator in the expenditure "of powerin order `to equalize the labor.

For the convenience of operators other than average, and in order toprovide proper equalization of energy expended by such operators thevalveg can beslightly closed or. fully opened to permit checking of theair flowing from the cylinder tothe chamber M and the reverse or -'thefreer flow as the case may be to give a delicate and actual equalizationfor all operators according to their' fancy.

What I claim is: p

1. In a pump and liquid storage mecha-1 nism, a tank adapted to receiveliquid `'under pressure, a manually `controlled pump out-` side saidtank adapted to force liquid intoj the tank and amotor under pressurefrom the tank operatively .connected with saidg pump and adapted `toassist inthe operations; of the pump.

2. .A tank and a pump outside thereof and; a fluid Ipassage connectingsaid parts andv provided with a plurality of valves, in combination withan auxiliary power mechanism adapted to utilize the atmospheric pressurein the tank to lighten the operations of the pump and comprising aseparate chamber and a piston therein mechanically connected with saidpump.

3. A tank and pump mechanism adapted to force liquid into the same, ahand lever toV operate the pump and a separate pneuvmatic motor having achamber open to the tank and a piston therein connected to the pump.

4. A fluid storage tank and a pump arranged to force fluid into the sameunder pressure, in combination with a pneumatic motor having airconnection leading to said tank and provided with an operatingconnection united with said pump, and a device to operate said pump andmotor simultaneously, whereby when the pump is forcing fluid into thetank the air under pressure is utilized by the motor to lighten theoperations of said operating device.

5. A tank adapted to receive fluid under pressure, a lpump having apiston to force the fluid into the tank and a valved connection unitingsaid 'tank and pump, in combination with a pneumatic motor having open'communication with the tank and provided with a piston of lesser pistonarea than the lpump piston, and a power device to reciprofcate bothpistons simultaneously.

6. A liquid storage tank and a pump out- :side the tank arranged toforce liquid into the same, a motor having valve controlled pressureconnections with the top of said 2tank and operatively connected withsaid pump and a hand lever to operate the pump.

In testimony whereof I aflix my signature j1in the presence of twowitnesses.

FRANK M. BUDLONG.

Witnesses:

E. F. BRUNDIDGE, H. M. SYMMs.

Copies o' this Ipatent may =be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

